气候变化领域集成服务门户(CCPortal): Typical embankment settlement/heave patterns of the Qinghai-Tibet highway in permafrost regions: Formation and evolution

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DOI	10.1016/j.enggeo.2016.10.013
	Typical embankment settlement/heave patterns of the Qinghai-Tibet highway in permafrost regions: Formation and evolution
	Yu, Fan; Qi, Jilin; Lai, Yuanming; Sivasithamparam, Nallathamby; Yao, Xiaoliang; Zhang, Mingyi; Liu, Yongzhi; Wu, Guilong
发表日期	2016
ISSN	0013-7952
EISSN	1872-6917
起始页码	147
结束页码	156
卷号	214
英文摘要	The Qinghai-Tibet Highway (QTH) in China has been experiencing a serious embankment settlement/heave for more than half a century. The settlement/heave is resulted from several mechanical processes taking place in different soil layers. In this paper, four typical settlement/heave patterns of road embankments in permafrost regions, namely steady-low rate, fluctuate, down step and steady-high rate are proposed based on 3-year monitored data of embankment settlement/heave and ground temperature at four road sections as well as previous published data of the QTH. Their formation mechanisms and evolution trend in the process of permafrost degradation are discussed from the viewpoints of engineering geology and mechanical process, based on the clarification of the deformation characteristics of different soil layers of a typical road embankment The results show that the four patterns are caused by the negligible settlement/heave, freeze-thaw cycling in an open condition, consolidation of the thawed permafrost layers, and creep of warm permafrost layers respectively. The pattern will change from one to another during the process of permafrost degradation, which will become very' complex with the occurrence of frost heave. The results can help revealing the deformation mechanism of road embankments in permafrost regions, and can benefit road construction and maintenance in the future. (C) 2016 Elsevier B.V. All rights reserved.
英文关键词	Qinghai-Tibet Highway; Permafrost; Settlement; Frost heave; Typical pattern; Formation and evolution
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS关键词	ROAD EMBANKMENT ; FREEZE-THAW ; FROST HEAVE ; DEGRADATION ; BENEATH
WOS记录号	WOS:000389096000015
来源期刊	ENGINEERING GEOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239484
作者单位	[Yu, Fan; Lai, Yuanming; Yao, Xiaoliang; Zhang, Mingyi; Liu, Yongzhi; Wu, Guilong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Qi, Jilin] Beijing Univ Civil Engn & Architecture, Beijing High Inst Res Ctr Engn Structures & New M, Beijing 100044, Peoples R China; [Lai, Yuanming] Lanzhou Jiaotong univ, Sch Civil Engn, Lanzhou 730070, Peoples R China; [Sivasithamparam, Nallathamby] Norwegian Geotech Inst, Computat Geomech Div, N-0806 Oslo, Norway; [Liu, Yongzhi; Wu, Guilong] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Beiluhe Observat Stn Frozen Soil Environm & Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yu, Fan,Qi, Jilin,Lai, Yuanming,et al. Typical embankment settlement/heave patterns of the Qinghai-Tibet highway in permafrost regions: Formation and evolution[J],2016,214.
APA	Yu, Fan.,Qi, Jilin.,Lai, Yuanming.,Sivasithamparam, Nallathamby.,Yao, Xiaoliang.,...&Wu, Guilong.(2016).Typical embankment settlement/heave patterns of the Qinghai-Tibet highway in permafrost regions: Formation and evolution.ENGINEERING GEOLOGY,214.
MLA	Yu, Fan,et al."Typical embankment settlement/heave patterns of the Qinghai-Tibet highway in permafrost regions: Formation and evolution".ENGINEERING GEOLOGY 214(2016).